I JUST started using NOW beef gelatin powder & have been amazed so far w/the results. I wouldn't have thought all the results would be possible from eating only 1 teaspoon a day. I'm more relaxed, less constipated & sleep better. And, no I'm not a representative of NOW...just to head that concern off at the pass. I started using it based on what I read at: http://www.raypeat.com
He has LOTS of useful & practical info....